The software maker also released three other patches today to
fix Windows flaws that carry less of a security threat.

But the company said those "important" bulletins also could
allow a malicious user to take control of another person's
computer.

All the flaws affect computers with operating systems dating
back to Windows 98. Users who have installed Microsoft's massive
security update for Windows XP, Service Pack 2, also will need to
install some patches.